Wheel dog



July 23, 1929. B. STOCKWELL 1,721,646

WHEEL DOG Filed Sept. 19, 1927 gnmntoz an M. 95,, M /iQM.

Cal

Patented July 23, 1929.

UNITED STATES BERT STOCKWELL, OF TACOMA, WASHINGTON.

WHEEL DOG.

Application filed September 19, 1927. Serial No. 220,569.

This invention relates to clamping devices and pertains moreparticularly to a car wheel dog or clamp.

The primary object of the invention is to provide a car wheel clamp oflight but strong and durable construction and adapted to be quicklyplaced in operative position.

A further object of the invention is to provide a wheel clamp in aunitary structure and thereby eliminating the possibility ofinisplacii'ig or losing portions of the device.

The invention will be best understood from a consideration of thefollowing detail description taken in connection with the accompanyingdrawing forming a part of this specification, with the understanding,however, that the invention is not confined to any strict conformitywith the showing of the drawing but may be changed or modified so longas such changes or modifications mark no material departure from thesalient features of the invention as expressed in the appended claims.

In the drawing Figure 1 shows the device embodying the presentinvention, in perspective and in ap plied position.

Figure 2 is a vie-w in side elevation of the clamp, portions thereofbeing in section for clearer illustration.

Figure 3 is a face view of the clamp with the plate over a springchamber removed.

Figure 4 is a top plan view of the structure.

Figure 5 is the cross section taken upon the line 5-5 of Figure 2.

Referring now to the drawing in detail wherein like numerals ofreference indicate corresponding parts throughout, the numeral 1indicates a portion of a railway car wheel support-ed upon the track 2which in turn is mounted on the usual tie 3. The car truck structure, aportion of which is indicated by the'numeral 4, carries the usualpacking and bearing box 5 into which the tion of the shank has the rightangularly extending body formed integral therewith as indicated at 11which body is provided with the passage 12 which extends therethroughalong the inner face of the shank 6. The outer end of this body 11 hasthe relatively shallow upstanding casing or shell 13 formed integraltherewith which is open on the side remote from the shank 6 to receive ahelical spring 14. A plate 15 is provided to be secured over the openface of the casing 13 to retain the spring 14 in position therein. Therear wall of the casing 13 is provided with the longitudinally extendingslot 16 for the purpose hereinafter set forth.

Slidable through the passage 12 in the body 11 and against the innerface of the shank 6 is a rack 17 provided in that face lying against theshank with the teeth 18. The lower end of the shank is formed to providethe head jaw 19 having the under surface thereof toothed as indicated at20 for engagement with the car wheel, as will be later described. Theforward face of the rack 17 has secured therein the pin 21 whichprojects through the slot 16 into the spring casing and beneath thespring 14 with which it has contact.

Pivotally mounted between the ears 10 upon the pivot pin 22 is the headend 23 of the rack operating lever 24, the peripheral surface of thehead 23 being provided with a rack engaging tooth 25 for the purposehereinafter described.

From the foregoing description it will be readily seen that there isprovided a fixed and a movable jaw member and when the device is to beplaced in operation the lever 24 is swung upwardly and held in a raisedposition by hand to move the engaging tooth 25 into the recess 26 out ofthe path of the rack 18 which permits movement of the rigid rack 17. Thehead or movable jaw 19 is now engaged over the flange of the car wheel 1and the clamp forced downwardly separating the jaws 7 and 19 against thetension of the spring 14 until the same are sufficiently far apart topermit the jaw 7 to engage beneath the head of the track 2. The spring14 then acts to move the jaws 7 and 19 toward one another to grip thetrack head and wheel flange between the same and the lever 24 isreleased, which permits the same to swing down by gravit to move thetooth 25 in en gages-wet with an adjacent reek teeth 18.

\Vith the clamp in the foregoing described position a jack 27 is thenmounted on the adjacent tie 3 beneath the box 5 and the head 28 thereofis raised against the box. The wheel 1 will be lifted slightly from thetrack 2 thereby raising the rack 17 and causing the tooth to move withthe rack teeth 18 swinging the lever 24. down until the same abuts theclamp shank 6 as shown in Figure It will be readily seen that furthermovement upward of the car wheel will be prevented and the box can beraised to the desired position to permit the desired work to be donethereon.

Having thus described my invention what I claim is:

1. A car wheel clamp of the character de scribed, comprising a bodyshank, a fixed jaw carried at one end of said shank, a shiftable jawcarrying member carried by said shank and movable thereon relative tosaid fixed jaw, means for normally urging said movable jaw toward thefixed jaw, and a shift able locking means carried by the shank anddesigned to engage the shii'table jaw carrying member under certainconditions, to pre vent the same from moving away from the fixed 2. In acar wheel clamp of the character described, a shank, a fixed jaw memberprojecting laterally from one end of said shank, a rack member slidablelongitudinally otone face of said shank, a jaw carried by said rack forcoaction with said fixed jaw, a resilient element carried by the shankand normally acting upon said rack to force the same toward said fixedjaw, and a pivoted latch member carried by said shank and normallyengaging said rack to prevent outward movement thereof away from thefixed jaw.

3. A car wheel clamp comprising an elongated shank body, a lateralextension at one end of said body formed to provide a rigid jaw member,a guide at the opposite end of said shank, a rack member slidablethrough said guide longitudinally of the shank, a jaw member carried bysaid rack and movable relative to said first mentioned jaw for coactiontherewith, means to provide a spring housing adjacent said guide, aspring member within said housing normally acting on said rack to forcethe same toward said first mentioned jaw, and a pivoted latch memberdesigned to automatically engage the said rack when the same is shiftedaway from the rack jaw to prevent outward movement of the rack withrespect to the shank carried jaw.

i, A car wheel clamp comprising a rigid and a'movable jaw, and meansincluding a gravity operated lever for restraining movement of the jawsin one direction.

5. A car wheel clamp comprising a shank having a recess, a rigid jaw onone end of said shank, a rack bar movable longitudinally of the shankhaving a jaw, spring means urging the jaws toward one another, a weightoperated lever pivoted to the shank, a tooth on said lever for engagingthe rack bar movable into the recess and out of the path of the teeth ofthe rack bar when the lever is in a raised position, and a stop forlimiting the downward swinging movement of said lever.

In testimony whereof I afiix my signature.

BERT STOCIUVELL.

